Retro-reflector



FIG. 1 is a perspective view of a retro-reflector, showing my new design;

FIG. 2 is a is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

A figure for a right side view is omitted as it is symmetrical to the left side view of FIG. 4.

The broken lines shown in the drawings illustrate portions of the retro-reflector that form no part of the claimed design. 

CLAIM I claim, the ornamental design for a retro-reflector, as shown and described. 